Split Tear Strength – ASTM D The force per unit thickness required to tear a material. Test specimens are placed in a tensile test machine. The jaws are set. This standard is issued under the fixed designation D ; the number 1 These test methods are under the jurisdiction of ASTM Committee D-9 on. Electrical. ASTM D Standard Test Methods for Crosslinked Insulations and Jackets for Wire and Cable.
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In common with other electrical equipment, the use of cables is not recommended on systems where the ratio of the ast, to positive phase reactance of the system at the point wstm cable application lies between? During and after the application of the?
After generating the ozone for at least 15 min, make a check on the percentage of ozone concentration see Order of Testing A fresh solution of 1 g of soluble starch in mL of boiling water is another available option.
Take the average of these determinations as the average thickness.
Ozonization of the air is accomplished in a generator consisting of a pair d70 concentric electrodes, separated by a thin glass dielectric, between which voltage is applied.
For multiple-conductor cables with nonshielded individual conductors having a metallic sheath, shield, or armor over the cable assembly, apply the speci?
ASTM D – 05_百度文库
These tests are normally performed in the factory and are used for product acceptance to speci? Apply a Hz potential to the remaining three electrodes of each specimen.
This solution is stable for a week if kept in a cool, dark place in a well-stoppered, brown bottle.
This increased area of exposure adds signi? Referenced Documents purchase separately The asrm listed below are referenced within the subject standard but are not provided as part of d407 standard. These test methods do asttm apply to the class of products known as flexible cords. Your basket is empty.
Physical tests provide useful data for research and development, engineering design, quality control, and acceptance or rejection under specifications. Rate of Voltage Application At the end of 1 h period, place the specimen in the oven, allowing both the micrometer and test specimen to remain in the oven for 1 h.
Please download Chrome or Firefox or view our browser tips. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
No sample shall be selected from lots of less than ft. BoxSouth Yarmouth, MA Three-conductor cables shall be tested with grounded three-phase voltage or with single-phase voltage. Consult the manufacturer for insulation thicknesses. Physical Test Procedures Acceptance on Basis of Tests on Short Specimens A chamber 18 to 20 in.
The rate of air? Jackets with a thickness of less than 0. Use the coefficient furnished by the manufacturer for the particular insulation or determine it in accordance with Section Measurement of Thickness of Specimens 9.
ASTM D – 05 Standard Test Methods for Crosslinked Insulations and Jackets for Wire and Cable
The physical test values give an approximation of how the insulation will physically perform in its service life. A number in parentheses indicates the year of last reapproval. Determine the tensile strength and elongation at the same time that the original properties are determined see Section Add iodine directly to the solution in the weighing tube on the balance pan until the total iodine in solution is about 0.
At the end of this period, remove the specimen from the water.
ASTM D470 – 13
When the full cross section is used, the specimens shall not be cut longitudinally. Where cable is provided with a protective covering, these insulation thicknesses shall be 90 mils 2. Air pressure, heat, or oxygen pressure Air oven For Oil Immersion 3 3 3 3 3 One specimen of each three shall be tested and the other two specimens held in reserve, except that when only one sample is selected all three specimens shall be tested and the average of the results reported.
Calculate the surface resistivity, P, as follows: This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Mercury vapor concentration is easily adtm using commercially available sniffers.
Cool in a dessicator to room temperature. Stretch one length of covering into the aatm of the buffing apparatus so that it lies? Blot the specimen lightly with a lintless cloth and within 3 min weigh to the nearest 1 mg. Take the sample before application of the insulation shield, or remove the strippable insulation shield.
Move the burner up to the specimen so that the tip of the inner blue cone just touches the specimen at a point midway between the supports. Solidly ground all electrically conductive parts that any person might come in contact with during the test. Do not use it to describe or appraise the? Use a power supply having a frequency aztm 49 asm 61 Hz. Calculate the area of a stranded conductor from its maximum diameter.